Combined drill-block and bench-block.



PATENTED JULY 24, 1906.

0. F.IFRAIN. COMBINED DRILL BLTOGK AND BENCH BLOCK.

APPLICATION I ILED APR. 1, 1905.

MIME/m4 UNI ED STATES" PATENT OFFICE.

CHARLES F. FRAIN, .OF SYRACUSE, NEW YORK. COMBINED DRILL-BLOCK ANDBENCH-BLOCK.

Specification 6f Letters Patent.

Application filed April 1, 1905. Serial No. 253.231.

Patented July 24, 1906.

To all whom it may concern.-

Syracuse, in the county of Onondaga, in the State of New York, have invented new and useful Im rovements in a Combined Drill- Block afi' Bench-Block-of which the following, taken in connection with the accompanying drawings, is a full, clear, and exact de scrlipl'gion'.

's invention relates to a combined drlllblock and bench-block as a new article of manufacture to be used by-machinists, toolmakers, and bench-workers for the reception and retention of various tools which a machinist, tool-maker, or bench-worker would use in layi g out and finishing the same or different kinds of work. I

It is well known that in this class of work a large variety of tools are em loyed and that considerable time is lost in t e selection and mounting of these various tools to perform the different grades of work.

Among the various tools which might be enumerated as separate parts of the usual kit of machinists and bench-workers tools are, first, a drill-block; second, a V- block; third, thebench-block; fourth, surface-gage; fifth, various kinds of clam ing devices for holdin the work 11' on the rillblock, bench-blocIx, and simi ar supports, and, sixth, clamps for holding these various parts in a fixed position.

The primary object of my inventionis to combine all ofthese parts in one general utility block or implement, which may be used asa bench or drill block and is equi ped with means for centering and drilling radially through round bars of difierent diameters, for clamping and laying out work, for-supporting surface and other similargages', and or many other purposes not necessary to herein enumerate or escribe.

Other and more specific objects relating to v the block and to its specific attachments will 45 be brought out in the following description.

- v In the drawi s, Fi re 1 is a top plan of my im roved an com ined bench-block and drill-b ock, showin thereon two forms of workrholdin attac ents, one for holding the work to e laid out and the other for centering a drill and holding the rods to be drilled.

Fig. 2 is a sectional View taken on line 2 2 of Fig. 1, showing the lower portion of the block 1n elevation; Fig. 3 'is an end view, partly in section, on line 3 3, Fig. 1, of the parts seen in Fig. 1, omitting the adjustable or inverted for different uses.

' work-holding'clamps. Fig. 4 is a pers ec- Be it known that I, CHARLEs F. FRAIN, of-

head, which 1s mounted u on and adjusta e lengthwise of said spind eshead. Fig. 7 is a sectional view of. a slightly-modified form of the spindle-head, 1

In carrying out the various objects of m invention I 1plrovide a block 1 of suitable dl mensions', w 'ch is usually made of steel and in this instance is rectangular in form and has its opposite faces disposed in substantially flat parallel planes, this being particularly true of the to and bottom faces, which are interchangeab e as the block is reversed This block is preferably of greater length and width than its depth from top to bottom and is provided with a marginal groove 2, which in this instance extends entirely around the block midway-between its lower and up or faces for forming opposed lengthwise an transverse ing for the purpose of forming the flanges 3 r and 4, whereby a suitable shoulder is formed for the reception of one or more clamps to hold the work to the block or to enable the block to be clamped to another support.

As best shown in Figs. 2 and 3, one face of the blockis, referablyleftplainandunbroken to permit t e device to be used as a bench- 1 block for laying out work, truing it up, and for other purposes for which such a block might be used .by bench workmen; When this side of the block is in use, the attachments which are applied to the other side may be removed, ifnecessary, and, in fact, this opposite side of the block may also be utilized for laying out work, if desired, it being understood that both faces of the block are adapted for man uses in benchworkand that it is simply pre erable though not necessary, to leave one face lain and unbroken, so'that such face may he used for hammering or straightening plates or bars of metal. The opposite face, which in the drawings is shown as the upper face, renders the device particularly useful as a V-block and drill-block, as well as for many other purposes, some of which will be hereinafter described, and for this urpose this face of the block is provided wit one or more lengthwise V-grooves, as 5 and 6, of different dimensions to receive and retain round or other bars, as 7, which are to be drilled transversely or radiall or upon which other work is to be performed:

In Fig. of the drawings 1 have shown a round bar? in dotted lines as seated in the groove 5 in position to be drilled transversely, and in order that the drill may be proglerly centered I provide a suitable centerlngead 8, which is adjustably mounted upon and securedto a suitable spindle v9 and is held in its adjusted position by a set-screw 10. A orticn of this centering-head 8 overhangs the up or surface of the block 1 and is provided wit a' vertical opening 1 1 to receive any one of a' number of difierent sizes of hardened-steel bushings 12, according to the size of the drill which is to be used, said bushing having its central vertical opening or drillhole disposed in vertical alinernent with the base of one of the grooves 5 or 6, according tering-head is used in connection with. The centering sleeve or bushing 12 is removably inserted in the opening 11 to permit diilerent bushings to be inserted, corresponding to the size of the drill which is used.

In the block shown in the drawings both of the parallel lengthwise edges of the flange 4 are dovetailed and are exactly alike, so that the spindle-head 13, which supports the spindle 9, and drill-centering head 8, ma be interchanged from one side of the bloc to the other and used in connection witheither of the grooves 5 or 6, it being understood that the base of both grooves are the same distances from the corresponding edges of the flange 4, so as to bring the center of the drillhole of the centering-head 8 into, vertical alinement with the base of either of the grooves when used at either side of the block.

dovetailed groove 14 ,of substantially the same'cross-sectional form as the dovetailed ribs at either side of the block 1-, which permite said head to be used on either dovetailed j the bar 7, or other objects of greater or less thickness.

In order to prevent the centering-head 8 6 5 from turning upon its spindle 9, said spindle is to which side of the block or groove the cenedges v The spindle-head 13 is provided with a preferably angular in cross-section, and the head 8 has a similarly-shaped vertical opening therein fitting with an easy sliding fit upon the an ular portion of the spindle 9, so that when t e head 8 is brou ht down upon the work the axis of the drillole in the bushing 12 will always be in vertical alinement with the base of the groove 5 or 6 and also with the center of the bar 7, the head 8 being held in its adjusted position by the set-screw 10, while the sliding spindle-head 9 is held in position by a suitable bolt 15 and nut 14%. This bolt 15 has an enlarged inner head or end formed with a beveled or undercut face 17, fitting against the lower beveled edge of one of the dovetailed ribs on the flange a, so that when the nut 16 is tightened the beveldace 17 of the bolt 15 is wed ed against the dovetailed rib and firmly ho ds the head 13 against lengthwise movement. Either one of the faces, as the upper face of the drill-block, is provided with an additional lengthwise groove 18, the base of which is circular in cross-section and in whichis fitted with a sliding fit two opposed circular heads 19 and 20, both of which are mounted upon a rotary spindle 21, having a handpiece 22. Each ol t ese heads 19 and 20 isprovided with a bifurcated projection for forming opposite ears 23, between which is pivoted a downwardlydefiected ipping-pawl 24, so that two of these pawls are provided, having their tree edges disposed in a plane below their pivots and facing each other to grip the opposite of the work and at thesarne time to force it thereb not only clamping the work upon the block, ut at the same time elampingthe screw 21 and heads 19 and 20 to said block against sliding or endwise movement.

The spindle 21 is movable endwise in the groove 1 8 below the surface of the block, so as not to interfere with the laying of the work fiatwise upon said surface, and the heads 19 and 20 are mounted upon said spindle and are movable endwise therewith in the groove 1.8. These heads 19 and 20 pro'ec'tsorne distance above the surface of the block through the open side of the roove, the head 19 being journaled upon t e spindle near the handpiece 22 and between opposed annular abutments 25 and 26 to prevent endwise movement of the head relative to the spindle. The other head 20 is formed with a threaded aperture, which receives the screw end of the spindle and is therefore moved endwise toward and away from the head 19 by the rotation of the s indle in opposite directions. It is now clear y apparent that the pawls 24 are supported above the surface of the block and that their free ends engage and ride upon said surface as the spindle is moved back and forth in the groove 18, thereby permittin the jaws to be shifted together to any desir position along the groove 18 for receiving the down onto the surface of the block,

work, after which the screw may be rotated to draw the pawl 24, which is engaged with the screw, toward and from the other jaw to clamp or loosen the work, as maybe desired.

When it is desired to use the drill-centering device, the spindle 21, with the clampingheads and pawls thereon, may be readily withdrawn endwise from the groove 18, or, on the other hand, if it isdesired to use the clamping device the drill-centering head may also be readily removed endwise from the dovetailed flange upon which it is mounted.

When the block is to be used for benchwork, both of these devices may be removed in the manner described, and the block may be then inverted, so as to bring the plain flat side of the top to be used for straightening or for other purposes requiring a flat level surface.

It will be observed that the flanges 3 and 4, which are formed by the groove in the edge of the block, afford means by which different kinds of work may beclamped to the block by other devices than those shown and also enable the block to be clamped to any other support.

Another important feature of this inven tion is that the drill-centering head, which is .adjustable on the vertical spindle, may be readily removed and other devices, such as surface-gages, substituted therefor. The invention therefore comprises, briefly, the specific formation of the block with the marginal groove and V-grooves, together with the adjustable spindle-head for supporting the drillcentering head and other devices, and also the surface-clamp, as the spindle 21, clamping-heads 19 and 20, and pivoted pawls 24, all of which parts constitute a new article of manufacture capable of a large variety of uses in connection with the usual wor of machinists, tool-makers, andbench-workers; but I do not wish to limit myself to the precise construction shown anddescribed.

Having thus fully described my invention,- what I claim, and desire to secure by Letters Patent, is v -1. As a new article of manufacture, a combined drill and bench block, opposite heads, both slidably interlocked with the block, a screw connecting both heads to move-them toward and from each other and slidable endwise therewith, and jaws onthe heads and having their work-engaging ends in a plane within their connections with their respective heads whereby when screw is tightened to clamp the jaws to the work, the atter is pressed against the block, thereby holding the heads and screw against endwise movement relatively to the block.

I 2. As a new article of manufacture, a com bined drill and bench block, opposite heads both slidably interlocked with the block, a screw journaled in one head and screwed into the other head to move the heads toward and from each other, and jaws each pivoted to one of the heads and having its work-engaging end between the plane of its pivot and adjacent surface of the block.

3. As a new article of manufacture, a combined drill-block and bench-block, comprising a rectangular metal body having oppositesubstantially flat working surfaces and provided with a groove in one edge between said surfaces forming opposed flanges, one of said flanges having its lengthwise edge dovetailed in cross-section, a spindle-head having a dovetail groove receiving the dovetail flange, and a drill-centering head adjustably mounted on the spindle-head.

4'. As a new article of manufacture, a combined drill-block and bench-block for machinists, tool-makers and bench-workers, comprising a rectangular metal body having opposite substantially flat working surfaces, one of which is formed with a V-groove, said body having a dovetail flange parallel with the groove, a spindle-head mounted upon and movable along the flange, a drill-centering head adjustably mounted on the spindlehead, and a sleeve removably mounted on the drill-centering head and having its axis intersecting the base of the V-groove.

5. A combined drill-block and a benchblock comprising a metal body having opposed parallel substantially flat surfaces and a len thwise groove opening from one of said sur aces, a rotary screw-spindle movable endwise in said groove, clamping-heads on the spindle and movable in said groove, one be ing en a ed and actuated by the threaded part '0 t e spindle, and opposed swinging jaws, one on each clamping-head, said jaws having their gripping ends operatively within the planes of their swinging axes, whereby the work, screws, heads and jaws are clamped to the block.

In witness whereof I have hereunto hand this 27th day of March, 1905.

CHARLES F. FRAIN.

Witnesses:

H. E. CHASE, HOWARD P. DENISON.

Set my 

